CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
ASSETS
Investment securities, held-to-maturity, fair value	$ 94,806	$ 41,008
SHAREHOLDERS' EQUITY
Common stock, authorized (in shares)	50,000,000	50,000,000
Common stock, par value (in dollars per share)	$ 1.00	$ 1.00
Common stock, issued (in shares)	37,720,945	37,246,655
Treasury stock (in shares)	100,000	100,000